San Juan vs Ulaanbaatar in September
Ulaanbaatar is the better pick in September — 82 vs 60 on SeasonMap's comfort score. Ulaanbaatar is cool, a little rain, clean air, while San Juan is sweltering, rainy, clean air.
San Juan vs Ulaanbaatar — September climate, side by side
| San Juan | Ulaanbaatar | |
|---|---|---|
| Comfort score | 60/100 (C) | 82/100 (A) |
| Feels-like high | 37°C | 14°C |
| Avg high / low | 32° / 25° | 17° / 4° |
| Rainfall | 145 mm | 39 mm |
| Rainy days | 20 | 7 |
| Humidity | 82% | 64% |
| Air quality (AQI) | 29 | 36 |
Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.
San Juan vs Ulaanbaatar in September — FAQ
- Is September better in San Juan or Ulaanbaatar?
- Ulaanbaatar is the better pick in September — 82 vs 60 on SeasonMap's comfort score. Ulaanbaatar is cool, a little rain, clean air, while San Juan is sweltering, rainy, clean air.
- What is the weather like in San Juan vs Ulaanbaatar in September?
- In September, San Juan averages 32°C high / 25°C low with about 145 mm of rain; Ulaanbaatar averages 17°C high / 4°C low with about 39 mm.